#ifndef __KEY_SUPPORT_H
#define __KEY_SUPPORT_H

#include<system.h>

#define KEY0 1
#define KEY1 0
#define KEY0_ID      (0b00000010)
#define KEY1_ID      (0b00000011)
#define NOT_DETECT   (0b11111111)

void key_init(void);
unsigned char key_scan(void);


#endif